Leon Tolstoy set his novel, "War and Peace" (1867) during the Napoleonic invasion of Russia of 1812. But he had not witnessed that war -- rather, Tolstoy had fought in another senseless and bloody war, the Crimean War (1853-1856), an experience that deeply influenced his thought. Tolstoy had a deep vision of the tragedy that wars are and his viewpoint is similar to our modern one based on statistics, although obtained by intuition only. Above, a painting by Vasilii Nesterenko (2005) that celebrates the Russian defense of Sevastopol in 1855.
From Tolstoy's “War and Peace” (1867)
To us it is incomprehensible that millions of Christian men killed and tortured each other either because Napoleon was ambitious or Alexander was firm, or because England’s policy was astute or the Duke of Oldenburg wronged. We cannot grasp what connection such circumstances have with the actual fact of slaughter and violence: why because the Duke was wronged, thousands of men from the other side of Europe killed and ruined the people of Smolénsk and Moscow and were killed by them.
To us, their descendants, who are not historians and are not carried away by the process of research and can therefore regard the event with unclouded common sense, an incalculable number of causes present themselves. The deeper we delve in search of these causes the more of them we find; and each separate cause or whole series of causes appears to us equally valid in itself and equally false by its insignificance compared to the magnitude of the events, and by its impotence—apart from the cooperation of all the other coincident causes—to occasion the event. To us, the wish or objection of this or that French corporal to serve a second term appears as much a cause as Napoleon’s refusal to withdraw his troops beyond the Vistula and to restore the duchy of Oldenburg; for had he not wished to serve, and had a second, a third, and a thousandth corporal and private also refused, there would have been so many less men in Napoleon’s army and the war could not have occurred.
<..> Without each of these causes nothing could have happened. So all these causes—myriads of causes—coincided to bring it about. And so there was no one cause for that occurrence, but it had to occur because it had to. Millions of men, renouncing their human feelings and reason, had to go from west to east to slay their fellows, just as some centuries previously hordes of men had come from the east to the west, slaying their fellows.
<..> it was necessary that millions of men in whose hands lay the real power—the soldiers who fired, or transported provisions and guns—should consent to carry out the will of these weak individuals, and should have been induced to do so by an infinite number of diverse and complex causes.
<..> When an apple has ripened and falls, why does it fall? Because of its attraction to the earth, because its stalk withers, because it is dried by the sun, because it grows heavier, because the wind shakes it, or because the boy standing below wants to eat it?
<..> And so there was no single cause for war, but it happened simply because it had to happen”
